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  1. <!-- Copyright 2008 Lubomir Bourdev and Hailin Jin
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  22.     <TITLE>Generic Image Library: algorithm.hpp Source File</TITLE>
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  29. <div class="qindex"><a class="qindex" href="index.html">Modules</a> 
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  38.   <div class="navpath"><a class="el" href="g_i_l_0076.html">boost</a>&nbsp;&raquo&nbsp;<a class="el" href="g_i_l_0079.html">gil</a>
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  40. <div class="contents">
    41. 

  41. <h1>algorithm.hpp</h1><a href="algorithm_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
    42. 

  42. <a name="l00002"></a>00002 <span class="comment">    Copyright 2005-2007 Adobe Systems Incorporated</span>
    43. 

  43. <a name="l00003"></a>00003 <span class="comment">   </span>
    44. 

  44. <a name="l00004"></a>00004 <span class="comment">    Use, modification and distribution are subject to the Boost Software License,</span>
    45. 

  45. <a name="l00005"></a>00005 <span class="comment">    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at</span>
    46. 

  46. <a name="l00006"></a>00006 <span class="comment">    http://www.boost.org/LICENSE_1_0.txt).</span>
    47. 

  47. <a name="l00007"></a>00007 <span class="comment"></span>
    48. 

  48. <a name="l00008"></a>00008 <span class="comment">    See http://opensource.adobe.com/gil for most recent version including documentation.</span>
    49. 

  49. <a name="l00009"></a>00009 <span class="comment">*/</span>
    50. 

  50. <a name="l00010"></a>00010 
    51. 

  51. <a name="l00011"></a>00011 
    52. 

  52. <a name="l00012"></a>00012 <span class="comment">/*************************************************************************************************/</span>
    53. 

  53. <a name="l00013"></a>00013 
    54. 

  54. <a name="l00014"></a>00014 <span class="preprocessor">#ifndef GIL_ALGORITHM_HPP</span>
    55. 

  55. <a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#define GIL_ALGORITHM_HPP</span>
    56. 

  56. <a name="l00016"></a>00016 <span class="preprocessor"></span>
    57. 

  57. <a name="l00017"></a>00017 <span class="preprocessor">#include &lt;cassert&gt;</span>
    58. 

  58. <a name="l00018"></a>00018 <span class="preprocessor">#include &lt;cstddef&gt;</span>
    59. 

  59. <a name="l00019"></a>00019 <span class="preprocessor">#include &lt;cstring&gt;</span>
    60. 

  60. <a name="l00020"></a>00020 <span class="preprocessor">#include &lt;algorithm&gt;</span>
    61. 

  61. <a name="l00021"></a>00021 <span class="preprocessor">#include &lt;iterator&gt;</span>
    62. 

  62. <a name="l00022"></a>00022 <span class="preprocessor">#include &lt;memory&gt;</span>
    63. 

  63. <a name="l00023"></a>00023 <span class="preprocessor">#include &lt;typeinfo&gt;</span>
    64. 

  64. <a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="g_i_l_0094.html" title="GIL configuration file.">gil_config.hpp</a>"</span>
    65. 

  65. <a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="g_i_l_0092.html" title="Concept check classes for GIL concepts.">gil_concept.hpp</a>"</span>
    66. 

  66. <a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="g_i_l_0069.html" title="pixel related algorithms">color_base_algorithm.hpp</a>"</span>
    67. 

  67. <a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="g_i_l_0225.html" title="image view class">image_view.hpp</a>"</span>
    68. 

  68. <a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="g_i_l_0227.html" title="Methods for constructing image views from raw data or other image views /.">image_view_factory.hpp</a>"</span>
    69. 

  69. <a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="g_i_l_0011.html" title="A model of a heterogeneous pixel that is not byte aligned. Examples are bitmap (1-bit...">bit_aligned_pixel_iterator.hpp</a>"</span>
    70. 

  70. <a name="l00030"></a>00030 
    71. 

  71. <a name="l00039"></a>00039 
    72. 

  72. <a name="l00040"></a>00040 <span class="comment">//#ifdef _MSC_VER</span>
    73. 

  73. <a name="l00041"></a>00041 <span class="comment">//#pragma warning(push)</span>
    74. 

  74. <a name="l00042"></a>00042 <span class="comment">//#pragma warning(disable : 4244)     // conversion from 'gil::image&lt;V,Alloc&gt;::coord_t' to 'int', possible loss of data (visual studio compiler doesn't realize that the two types are the same)</span>
    75. 

  75. <a name="l00043"></a>00043 <span class="comment">//#endif</span>
    76. 

  76. <a name="l00044"></a>00044 
    77. 

  77. <a name="l00045"></a><a class="code" href="namespaceboost.html">00045</a> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
    78. 

  78. <a name="l00046"></a>00046 
    79. 

  79. <a name="l00047"></a>00047 <span class="comment">//forward declarations</span>
    80. 

  80. <a name="l00048"></a>00048 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> ChannelPtr, <span class="keyword">typename</span> ColorSpace&gt;
    81. 

  81. <a name="l00049"></a>00049 <span class="keyword">struct </span>planar_pixel_iterator;
    82. 

  82. <a name="l00050"></a>00050 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;
    83. 

  83. <a name="l00051"></a>00051 <span class="keyword">class </span>memory_based_step_iterator;
    84. 

  84. <a name="l00052"></a>00052 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> StepIterator&gt;
    85. 

  85. <a name="l00053"></a>00053 <span class="keyword">class </span>memory_based_2d_locator;
    86. 

  86. <a name="l00054"></a>00054 
    87. 

  87. <a name="l00055"></a>00055 <span class="comment">// a tag denoting incompatible arguments</span>
    88. 

  88. <a name="l00056"></a>00056 <span class="keyword">struct </span>error_t {};
    89. 

  89. <a name="l00057"></a>00057 
    90. 

  90. <a name="l00082"></a>00082 
    91. 

  91. <a name="l00083"></a>00083 
    92. 

  92. <a name="l00087"></a>00087 
    93. 

  93. <a name="l00096"></a>00096 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Derived, <span class="keyword">typename</span> Result=<span class="keywordtype">void</span>&gt;
    94. 

  94. <a name="l00097"></a><a class="code" href="g_i_l_0387.html">00097</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0387.html" title="A generic binary operation on viewsUse this class as a convenience superclass when...">binary_operation_obj</a> {
    95. 

  95. <a name="l00098"></a>00098     <span class="keyword">typedef</span> Result result_type;
    96. 

  96. <a name="l00099"></a>00099 
    97. 

  97. <a name="l00100"></a>00100     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt; GIL_FORCEINLINE
    98. 

  98. <a name="l00101"></a>00101     result_type operator()(<span class="keyword">const</span> std::pair&lt;const V1*,const V2*&gt;&amp; p)<span class="keyword"> const </span>{
    99. 

  99. <a name="l00102"></a>00102         <span class="keywordflow">return</span> apply(*p.first, *p.second, <span class="keyword">typename</span> <a class="code" href="g_i_l_0636.html" title="Returns whether two views are compatible.">views_are_compatible&lt;V1,V2&gt;::type</a>());
    100. 

  100. <a name="l00103"></a>00103     }
    101. 

  101. <a name="l00104"></a>00104 
    102. 

  102. <a name="l00105"></a>00105     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt; GIL_FORCEINLINE
    103. 

  103. <a name="l00106"></a>00106     result_type operator()(<span class="keyword">const</span> V1&amp; v1, <span class="keyword">const</span> V2&amp; v2)<span class="keyword"> const </span>{
    104. 

  104. <a name="l00107"></a>00107         <span class="keywordflow">return</span> apply(v1, v2, <span class="keyword">typename</span> <a class="code" href="g_i_l_0636.html" title="Returns whether two views are compatible.">views_are_compatible&lt;V1,V2&gt;::type</a>());
    105. 

  105. <a name="l00108"></a>00108     }
    106. 

  106. <a name="l00109"></a>00109 
    107. 

  107. <a name="l00110"></a>00110     result_type operator()(<span class="keyword">const</span> error_t&amp;)<span class="keyword"> const </span>{ <span class="keywordflow">throw</span> std::bad_cast(); }
    108. 

  108. <a name="l00111"></a>00111 <span class="keyword">private</span>:
    109. 

  109. <a name="l00112"></a>00112 
    110. 

  110. <a name="l00113"></a>00113     <span class="comment">// dispatch from apply overload to a function with distinct name</span>
    111. 

  111. <a name="l00114"></a>00114     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt;
    112. 

  112. <a name="l00115"></a>00115     GIL_FORCEINLINE result_type apply(<span class="keyword">const</span> V1&amp; v1, <span class="keyword">const</span> V2&amp; v2, mpl::false_)<span class="keyword"> const </span>{
    113. 

  113. <a name="l00116"></a>00116         <span class="keywordflow">return</span> ((<span class="keyword">const</span> Derived*)<span class="keyword">this</span>)-&gt;apply_incompatible(v1,v2);
    114. 

  114. <a name="l00117"></a>00117     }
    115. 

  115. <a name="l00118"></a>00118 
    116. 

  116. <a name="l00119"></a>00119     <span class="comment">// dispatch from apply overload to a function with distinct name</span>
    117. 

  117. <a name="l00120"></a>00120     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt;
    118. 

  118. <a name="l00121"></a>00121     GIL_FORCEINLINE result_type apply(<span class="keyword">const</span> V1&amp; v1, <span class="keyword">const</span> V2&amp; v2, mpl::true_)<span class="keyword"> const </span>{
    119. 

  119. <a name="l00122"></a>00122         <span class="keywordflow">return</span> ((<span class="keyword">const</span> Derived*)<span class="keyword">this</span>)-&gt;apply_compatible(v1,v2);
    120. 

  120. <a name="l00123"></a>00123     }
    121. 

  121. <a name="l00124"></a>00124 
    122. 

  122. <a name="l00125"></a>00125     <span class="comment">// function with distinct name - it can be overloaded by subclasses</span>
    123. 

  123. <a name="l00126"></a>00126     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt;
    124. 

  124. <a name="l00127"></a>00127     GIL_FORCEINLINE result_type apply_incompatible(<span class="keyword">const</span> V1&amp; v1, <span class="keyword">const</span> V2&amp; v2)<span class="keyword"> const </span>{
    125. 

  125. <a name="l00128"></a>00128         <span class="keywordflow">throw</span> std::bad_cast();
    126. 

  126. <a name="l00129"></a>00129     }
    127. 

  127. <a name="l00130"></a>00130 };
    128. 

  128. <a name="l00131"></a>00131 } }  <span class="comment">// namespace boost::gil</span>
    129. 

  129. <a name="l00132"></a>00132 
    130. 

  130. <a name="l00138"></a>00138 
    131. 

  131. <a name="l00142"></a>00142 
    132. 

  132. <a name="l00143"></a>00143 <span class="keyword">namespace </span>std {
    133. 

  133. <a name="l00144"></a>00144 
    134. 

  134. <a name="l00147"></a>00147 <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> Cs&gt; 
    135. 

  135. <a name="l00148"></a>00148 GIL_FORCEINLINE <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* 
    136. 

  136. <a name="l00149"></a><a class="code" href="g_i_l_0214.html#gc2faa90ab27d7fb0253d19839c75d341">00149</a> <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">copy</a>(<a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* first, <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* last, 
    137. 

  137. <a name="l00150"></a>00150      <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* dst) { 
    138. 

  138. <a name="l00151"></a>00151     <span class="keywordflow">return</span> (<a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>*)<a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">std::copy</a>((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)first,(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)last, (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)dst);
    139. 

  139. <a name="l00152"></a>00152 }
    140. 

  140. <a name="l00153"></a>00153 
    141. 

  141. <a name="l00156"></a>00156 <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> Cs&gt; 
    142. 

  142. <a name="l00157"></a>00157 GIL_FORCEINLINE <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* 
    143. 

  143. <a name="l00158"></a><a class="code" href="g_i_l_0214.html#g85354afb86367e7d21162317463e8743">00158</a> <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">copy</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* first, <span class="keyword">const</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* last, 
    144. 

  144. <a name="l00159"></a>00159      <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>* dst) { 
    145. 

  145. <a name="l00160"></a>00160     <span class="keywordflow">return</span> (<a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">boost::gil::pixel&lt;T,Cs&gt;</a>*)<a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">std::copy</a>((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)first,(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)last, (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)dst);
    146. 

  146. <a name="l00161"></a>00161 }
    147. 

  147. <a name="l00162"></a>00162 } <span class="comment">// namespace std</span>
    148. 

  148. <a name="l00163"></a>00163 
    149. 

  149. <a name="l00164"></a>00164 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
    150. 

  150. <a name="l00165"></a>00165 <span class="keyword">namespace </span>detail {
    151. 

  151. <a name="l00166"></a>00166 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> O&gt; <span class="keyword">struct </span>copy_fn { 
    152. 

  152. <a name="l00167"></a>00167     GIL_FORCEINLINE I operator()(I first, I last, O dst)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">std::copy</a>(first,last,dst); } 
    153. 

  153. <a name="l00168"></a>00168 };
    154. 

  154. <a name="l00169"></a>00169 } <span class="comment">// namespace detail</span>
    155. 

  155. <a name="l00170"></a>00170 } }  <span class="comment">// namespace boost::gil</span>
    156. 

  156. <a name="l00171"></a>00171 
    157. 

  157. <a name="l00172"></a>00172 <span class="keyword">namespace </span>std {
    158. 

  158. <a name="l00175"></a>00175 <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Cs, <span class="keyword">typename</span> IC1, <span class="keyword">typename</span> IC2&gt; GIL_FORCEINLINE
    159. 

  159. <a name="l00176"></a><a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1">00176</a> <a class="code" href="g_i_l_0609.html" title="An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept...">boost::gil::planar_pixel_iterator&lt;IC2,Cs&gt;</a> <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">copy</a>(<a class="code" href="g_i_l_0609.html" title="An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept...">boost::gil::planar_pixel_iterator&lt;IC1,Cs&gt;</a> first, <a class="code" href="g_i_l_0609.html" title="An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept...">boost::gil::planar_pixel_iterator&lt;IC1,Cs&gt;</a> last, <a class="code" href="g_i_l_0609.html" title="An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept...">boost::gil::planar_pixel_iterator&lt;IC2,Cs&gt;</a> dst) { 
    160. 

  160. <a name="l00177"></a>00177     boost::gil::gil_function_requires&lt;boost::gil::ChannelsCompatibleConcept&lt;typename std::iterator_traits&lt;IC1&gt;::value_type,<span class="keyword">typename</span> std::iterator_traits&lt;IC2&gt;::value_type&gt; &gt;();
    161. 

  161. <a name="l00178"></a>00178     static_for_each(first,last,dst,boost::gil::detail::copy_fn&lt;IC1,IC2&gt;());
    162. 

  162. <a name="l00179"></a>00179     <span class="keywordflow">return</span> dst+(last-first);
    163. 

  163. <a name="l00180"></a>00180 }
    164. 

  164. <a name="l00181"></a>00181 } <span class="comment">// namespace std</span>
    165. 

  165. <a name="l00182"></a>00182 
    166. 

  166. <a name="l00183"></a>00183 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
    167. 

  167. <a name="l00184"></a>00184 <span class="keyword">namespace </span>detail {
    168. 

  168. <a name="l00187"></a>00187 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> O&gt;
    169. 

  169. <a name="l00188"></a><a class="code" href="g_i_l_0479.html">00188</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0479.html">copier_n</a> {
    170. 

  170. <a name="l00189"></a>00189     GIL_FORCEINLINE <span class="keywordtype">void</span> operator()(I src, <span class="keyword">typename</span> std::iterator_traits&lt;I&gt;::difference_type n, O dst)<span class="keyword"> const </span>{ <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">std::copy</a>(src,src+n, dst); }
    171. 

  171. <a name="l00190"></a>00190 };
    172. 

  172. <a name="l00191"></a>00191 
    173. 

  173. <a name="l00193"></a>00193 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> IL, <span class="keyword">typename</span> O&gt;  <span class="comment">// IL Models ConstPixelLocatorConcept, O Models PixelIteratorConcept</span>
    174. 

  174. <a name="l00194"></a><a class="code" href="g_i_l_0483.html">00194</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0479.html">copier_n</a>&lt;<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d</a>&lt;IL&gt;,O&gt; {
    175. 

  175. <a name="l00195"></a>00195     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;iterator_from_2d&lt;IL&gt; &gt;::difference_type diff_t;
    176. 

  176. <a name="l00196"></a>00196     GIL_FORCEINLINE <span class="keywordtype">void</span> operator()(<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;IL&gt;</a> src, diff_t n, O dst)<span class="keyword"> const </span>{
    177. 

  177. <a name="l00197"></a>00197         gil_function_requires&lt;PixelLocatorConcept&lt;IL&gt; &gt;();
    178. 

  178. <a name="l00198"></a>00198         gil_function_requires&lt;MutablePixelIteratorConcept&lt;O&gt; &gt;();
    179. 

  179. <a name="l00199"></a>00199         <span class="keywordflow">while</span> (n&gt;0) {
    180. 

  180. <a name="l00200"></a>00200             <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;IL&gt;::difference_type</a> diff_t;
    181. 

  181. <a name="l00201"></a>00201             diff_t l=src.<a class="code" href="g_i_l_0042.html#379c24f2d0a75769afc06dff7b569b8f">width</a>()-src.<a class="code" href="g_i_l_0042.html#cb3204f0b17472894a99939821d597be">x_pos</a>();
    182. 

  182. <a name="l00202"></a>00202             diff_t numToCopy=(n&lt;l ? n:l);
    183. 

  183. <a name="l00203"></a>00203             detail::copy_n(src.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>(), numToCopy, dst);
    184. 

  184. <a name="l00204"></a>00204             dst+=numToCopy;
    185. 

  185. <a name="l00205"></a>00205             src+=numToCopy;
    186. 

  186. <a name="l00206"></a>00206             n-=numToCopy;
    187. 

  187. <a name="l00207"></a>00207         }
    188. 

  188. <a name="l00208"></a>00208     }
    189. 

  189. <a name="l00209"></a>00209 };
    190. 

  190. <a name="l00210"></a>00210 
    191. 

  191. <a name="l00212"></a>00212 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> OL&gt; <span class="comment">// I Models ConstPixelIteratorConcept, OL Models PixelLocatorConcept</span>
    192. 

  192. <a name="l00213"></a><a class="code" href="g_i_l_0481.html">00213</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0479.html">copier_n</a>&lt;I,<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d</a>&lt;OL&gt; &gt; {
    193. 

  193. <a name="l00214"></a>00214     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;I&gt;::difference_type diff_t;
    194. 

  194. <a name="l00215"></a>00215     GIL_FORCEINLINE <span class="keywordtype">void</span> operator()(I src, diff_t n, <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;OL&gt;</a> dst)<span class="keyword"> const </span>{
    195. 

  195. <a name="l00216"></a>00216         gil_function_requires&lt;PixelIteratorConcept&lt;I&gt; &gt;();
    196. 

  196. <a name="l00217"></a>00217         gil_function_requires&lt;MutablePixelLocatorConcept&lt;OL&gt; &gt;();
    197. 

  197. <a name="l00218"></a>00218         <span class="keywordflow">while</span> (n&gt;0) {
    198. 

  198. <a name="l00219"></a>00219             diff_t l=dst.<a class="code" href="g_i_l_0042.html#379c24f2d0a75769afc06dff7b569b8f">width</a>()-dst.<a class="code" href="g_i_l_0042.html#cb3204f0b17472894a99939821d597be">x_pos</a>();
    199. 

  199. <a name="l00220"></a>00220             diff_t numToCopy=(n&lt;l ? n:l);
    200. 

  200. <a name="l00221"></a>00221             detail::copy_n(src, numToCopy, dst.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>());
    201. 

  201. <a name="l00222"></a>00222             dst+=numToCopy;
    202. 

  202. <a name="l00223"></a>00223             src+=numToCopy;
    203. 

  203. <a name="l00224"></a>00224             n-=numToCopy;
    204. 

  204. <a name="l00225"></a>00225         }
    205. 

  205. <a name="l00226"></a>00226     }
    206. 

  206. <a name="l00227"></a>00227 };
    207. 

  207. <a name="l00228"></a>00228 
    208. 

  208. <a name="l00230"></a>00230 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> IL, <span class="keyword">typename</span> OL&gt;
    209. 

  209. <a name="l00231"></a><a class="code" href="g_i_l_0485.html">00231</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0479.html">copier_n</a>&lt;<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d</a>&lt;IL&gt;,<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d</a>&lt;OL&gt; &gt; {
    210. 

  210. <a name="l00232"></a>00232    <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;IL&gt;::difference_type</a> diff_t;
    211. 

  211. <a name="l00233"></a>00233    GIL_FORCEINLINE <span class="keywordtype">void</span> operator()(<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;IL&gt;</a> src, diff_t n, <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">iterator_from_2d&lt;OL&gt;</a> dst)<span class="keyword"> const </span>{
    212. 

  212. <a name="l00234"></a>00234         gil_function_requires&lt;PixelLocatorConcept&lt;IL&gt; &gt;();
    213. 

  213. <a name="l00235"></a>00235         gil_function_requires&lt;MutablePixelLocatorConcept&lt;OL&gt; &gt;();
    214. 

  214. <a name="l00236"></a>00236         <span class="keywordflow">if</span> (src.<a class="code" href="g_i_l_0042.html#cb3204f0b17472894a99939821d597be">x_pos</a>()!=dst.<a class="code" href="g_i_l_0042.html#cb3204f0b17472894a99939821d597be">x_pos</a>() || src.<a class="code" href="g_i_l_0042.html#379c24f2d0a75769afc06dff7b569b8f">width</a>()!=dst.<a class="code" href="g_i_l_0042.html#379c24f2d0a75769afc06dff7b569b8f">width</a>()) {
    215. 

  215. <a name="l00237"></a>00237             <span class="keywordflow">while</span>(n--&gt;0) {
    216. 

  216. <a name="l00238"></a>00238                 *dst++=*src++;
    217. 

  217. <a name="l00239"></a>00239             }
    218. 

  218. <a name="l00240"></a>00240         }
    219. 

  219. <a name="l00241"></a>00241         <span class="keywordflow">while</span> (n&gt;0) {
    220. 

  220. <a name="l00242"></a>00242             diff_t l=dst.<a class="code" href="g_i_l_0042.html#379c24f2d0a75769afc06dff7b569b8f">width</a>()-dst.<a class="code" href="g_i_l_0042.html#cb3204f0b17472894a99939821d597be">x_pos</a>();
    221. 

  221. <a name="l00243"></a>00243             diff_t numToCopy=(n&lt;l ? n : l);
    222. 

  222. <a name="l00244"></a>00244             detail::copy_n(src.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>(), numToCopy, dst.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>());
    223. 

  223. <a name="l00245"></a>00245             dst+=numToCopy;
    224. 

  224. <a name="l00246"></a>00246             src+=numToCopy;
    225. 

  225. <a name="l00247"></a>00247             n-=numToCopy;
    226. 

  226. <a name="l00248"></a>00248         }
    227. 

  227. <a name="l00249"></a>00249     }
    228. 

  228. <a name="l00250"></a>00250 };
    229. 

  229. <a name="l00251"></a>00251 
    230. 

  230. <a name="l00252"></a>00252 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SrcIterator, <span class="keyword">typename</span> DstIterator&gt;
    231. 

  231. <a name="l00253"></a>00253 GIL_FORCEINLINE DstIterator copy_with_2d_iterators(SrcIterator first, SrcIterator last, DstIterator dst) {
    232. 

  232. <a name="l00254"></a>00254     <span class="keyword">typedef</span> <span class="keyword">typename</span> SrcIterator::x_iterator src_x_iterator;
    233. 

  233. <a name="l00255"></a>00255     <span class="keyword">typedef</span> <span class="keyword">typename</span> DstIterator::x_iterator dst_x_iterator;
    234. 

  234. <a name="l00256"></a>00256 
    235. 

  235. <a name="l00257"></a>00257     <span class="keyword">typename</span> SrcIterator::difference_type n = last - first;
    236. 

  236. <a name="l00258"></a>00258 
    237. 

  237. <a name="l00259"></a>00259     <span class="keywordflow">if</span> (first.is_1d_traversable()) {
    238. 

  238. <a name="l00260"></a>00260         <span class="keywordflow">if</span> (dst.is_1d_traversable())
    239. 

  239. <a name="l00261"></a>00261             <a class="code" href="g_i_l_0479.html">copier_n&lt;src_x_iterator,dst_x_iterator&gt;</a>()(first.x(),n, dst.x());
    240. 

  240. <a name="l00262"></a>00262         <span class="keywordflow">else</span>
    241. 

  241. <a name="l00263"></a>00263             <a class="code" href="g_i_l_0479.html">copier_n&lt;src_x_iterator,DstIterator &gt;</a>()(first.x(),n, dst);
    242. 

  242. <a name="l00264"></a>00264     } <span class="keywordflow">else</span> {
    243. 

  243. <a name="l00265"></a>00265         <span class="keywordflow">if</span> (dst.is_1d_traversable())
    244. 

  244. <a name="l00266"></a>00266             copier_n&lt;SrcIterator,dst_x_iterator&gt;()(first,n, dst.x());
    245. 

  245. <a name="l00267"></a>00267         <span class="keywordflow">else</span>
    246. 

  246. <a name="l00268"></a>00268             copier_n&lt;SrcIterator,DstIterator&gt;()(first,n,dst);
    247. 

  247. <a name="l00269"></a>00269     }
    248. 

  248. <a name="l00270"></a>00270     <span class="keywordflow">return</span> dst+n;
    249. 

  249. <a name="l00271"></a>00271 }
    250. 

  250. <a name="l00272"></a>00272 
    251. 

  251. <a name="l00273"></a>00273 } <span class="comment">// namespace detail</span>
    252. 

  252. <a name="l00274"></a>00274 } }  <span class="comment">// namespace boost::gil</span>
    253. 

  253. <a name="l00275"></a>00275 
    254. 

  254. <a name="l00276"></a>00276 <span class="keyword">namespace </span>std {
    255. 

  255. <a name="l00279"></a>00279 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> IL, <span class="keyword">typename</span> OL&gt;
    256. 

  256. <a name="l00280"></a><a class="code" href="g_i_l_0214.html#g12594bf8bdb7b27c070987a3d30293ba">00280</a> GIL_FORCEINLINE <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;OL&gt;</a> <a class="code" href="g_i_l_0214.html#g12594bf8bdb7b27c070987a3d30293ba" title="std::copy(I1,I1,I2) with I1 and I2 being a iterator_from_2d">copy1</a>(<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;IL&gt;</a> first, <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;IL&gt;</a> last, <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;OL&gt;</a> dst) {
    257. 

  257. <a name="l00281"></a>00281     <span class="keywordflow">return</span> boost::gil::detail::copy_with_2d_iterators(first,last,dst);
    258. 

  258. <a name="l00282"></a>00282 }
    259. 

  259. <a name="l00283"></a>00283 
    260. 

  260. <a name="l00284"></a>00284 } <span class="comment">// namespace std</span>
    261. 

  261. <a name="l00285"></a>00285 
    262. 

  262. <a name="l00286"></a>00286 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
    263. 

  263. <a name="l00287"></a>00287 
    264. 

  264. <a name="l00288"></a>00288 
    265. 

  265. <a name="l00291"></a>00291 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> View1, <span class="keyword">typename</span> View2&gt; GIL_FORCEINLINE
    266. 

  266. <a name="l00292"></a><a class="code" href="g_i_l_0145.html#g16f18749152217a2b84733c330a2b415">00292</a> <span class="keywordtype">void</span> <a class="code" href="g_i_l_0145.html#g16f18749152217a2b84733c330a2b415" title="std::copy for image views">copy_pixels</a>(<span class="keyword">const</span> View1&amp; src, <span class="keyword">const</span> View2&amp; dst) { 
    267. 

  267. <a name="l00293"></a>00293     assert(src.dimensions()==dst.dimensions());
    268. 

  268. <a name="l00294"></a>00294     detail::copy_with_2d_iterators(src.begin(),src.end(),dst.begin());
    269. 

  269. <a name="l00295"></a>00295 }
    270. 

  270. <a name="l00296"></a>00296 
    271. 

  271. <a name="l00302"></a>00302 
    272. 

  272. <a name="l00308"></a>00308 
    273. 

  273. <a name="l00309"></a>00309 <span class="keyword">namespace </span>detail {
    274. 

  274. <a name="l00310"></a>00310 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> CC&gt;
    275. 

  275. <a name="l00311"></a>00311 <span class="keyword">class </span>copy_and_convert_pixels_fn : <span class="keyword">public</span> binary_operation_obj&lt;copy_and_convert_pixels_fn&lt;CC&gt; &gt; {
    276. 

  276. <a name="l00312"></a>00312 <span class="keyword">private</span>:
    277. 

  277. <a name="l00313"></a>00313     CC _cc;
    278. 

  278. <a name="l00314"></a>00314 <span class="keyword">public</span>:
    279. 

  279. <a name="l00315"></a>00315     <span class="keyword">typedef</span> <span class="keyword">typename</span> binary_operation_obj&lt;copy_and_convert_pixels_fn&lt;CC&gt; &gt;::result_type result_type;
    280. 

  280. <a name="l00316"></a>00316     copy_and_convert_pixels_fn() {}
    281. 

  281. <a name="l00317"></a>00317     copy_and_convert_pixels_fn(CC cc_in) : _cc(cc_in) {}
    282. 

  282. <a name="l00318"></a>00318    <span class="comment">// when the two color spaces are incompatible, a color conversion is performed</span>
    283. 

  283. <a name="l00319"></a>00319     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt; GIL_FORCEINLINE 
    284. 

  284. <a name="l00320"></a>00320     result_type apply_incompatible(<span class="keyword">const</span> V1&amp; src, <span class="keyword">const</span> V2&amp; dst)<span class="keyword"> const </span>{
    285. 

  285. <a name="l00321"></a>00321         <a class="code" href="g_i_l_0145.html#g16f18749152217a2b84733c330a2b415" title="std::copy for image views">copy_pixels</a>(color_converted_view&lt;typename V2::value_type&gt;(src,_cc),dst);
    286. 

  286. <a name="l00322"></a>00322     }
    287. 

  287. <a name="l00323"></a>00323 
    288. 

  288. <a name="l00324"></a>00324     <span class="comment">// If the two color spaces are compatible, copy_and_convert is just copy</span>
    289. 

  289. <a name="l00325"></a>00325     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt; GIL_FORCEINLINE 
    290. 

  290. <a name="l00326"></a>00326     result_type apply_compatible(<span class="keyword">const</span> V1&amp; src, <span class="keyword">const</span> V2&amp; dst)<span class="keyword"> const </span>{
    291. 

  291. <a name="l00327"></a>00327          <a class="code" href="g_i_l_0145.html#g16f18749152217a2b84733c330a2b415" title="std::copy for image views">copy_pixels</a>(src,dst);
    292. 

  292. <a name="l00328"></a>00328     }
    293. 

  293. <a name="l00329"></a>00329 };
    294. 

  294. <a name="l00330"></a>00330 } <span class="comment">// namespace detail</span>
    295. 

  295. <a name="l00331"></a>00331 
    296. 

  296. <a name="l00333"></a>00333 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2,<span class="keyword">typename</span> CC&gt; 
    297. 

  297. <a name="l00334"></a>00334 GIL_FORCEINLINE 
    298. 

  298. <a name="l00335"></a>00335 <span class="keywordtype">void</span> copy_and_convert_pixels(<span class="keyword">const</span> V1&amp; src, <span class="keyword">const</span> V2&amp; dst,CC cc) { 
    299. 

  299. <a name="l00336"></a>00336     detail::copy_and_convert_pixels_fn&lt;CC&gt; ccp(cc);
    300. 

  300. <a name="l00337"></a>00337     ccp(src,dst);
    301. 

  301. <a name="l00338"></a>00338 }
    302. 

  302. <a name="l00339"></a>00339 
    303. 

  303. <a name="l00340"></a>00340 <span class="keyword">struct </span>default_color_converter;
    304. 

  304. <a name="l00341"></a>00341 
    305. 

  305. <a name="l00343"></a>00343 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> View1, <span class="keyword">typename</span> View2&gt; 
    306. 

  306. <a name="l00344"></a>00344 GIL_FORCEINLINE 
    307. 

  307. <a name="l00345"></a>00345 <span class="keywordtype">void</span> copy_and_convert_pixels(<span class="keyword">const</span> View1&amp; src, <span class="keyword">const</span> View2&amp; dst) { 
    308. 

  308. <a name="l00346"></a>00346     detail::copy_and_convert_pixels_fn&lt;default_color_converter&gt; ccp;
    309. 

  309. <a name="l00347"></a>00347     ccp(src,dst);
    310. 

  310. <a name="l00348"></a>00348 }
    311. 

  311. <a name="l00349"></a>00349 
    312. 

  312. <a name="l00350"></a>00350 } }  <span class="comment">// namespace boost::gil</span>
    313. 

  313. <a name="l00351"></a>00351 
    314. 

  314. <a name="l00353"></a>00353 <span class="comment">//</span>
    315. 

  315. <a name="l00354"></a>00354 <span class="comment">// std::fill and gil::fill_pixels</span>
    316. 

  316. <a name="l00355"></a>00355 <span class="comment">//</span>
    317. 

  317. <a name="l00357"></a>00357 <span class="comment"></span>
    318. 

  318. <a name="l00361"></a>00361 
    319. 

  319. <a name="l00362"></a>00362 
    320. 

  320. <a name="l00363"></a>00363 <span class="keyword">namespace </span>std {
    321. 

  321. <a name="l00372"></a>00372 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> IL, <span class="keyword">typename</span> V&gt;
    322. 

  322. <a name="l00373"></a><a class="code" href="g_i_l_0214.html#g718772a47188f4e2ecfce2f28fa3dc4f">00373</a> <span class="keywordtype">void</span> <a class="code" href="g_i_l_0214.html#g718772a47188f4e2ecfce2f28fa3dc4f" title="std::fill(I,I,V) with I being a iterator_from_2d">fill</a>(<a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;IL&gt;</a> first, <a class="code" href="g_i_l_0042.html" title="Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept...">boost::gil::iterator_from_2d&lt;IL&gt;</a> last, <span class="keyword">const</span> V&amp; val) {
    323. 

  323. <a name="l00374"></a>00374     boost::gil::gil_function_requires&lt;boost::gil::MutablePixelLocatorConcept&lt;IL&gt; &gt;();
    324. 

  324. <a name="l00375"></a>00375     <span class="keywordflow">if</span> (first.<a class="code" href="g_i_l_0042.html#90ccf75aa2deb01fbce509842191cad2">is_1d_traversable</a>()) {
    325. 

  325. <a name="l00376"></a>00376         <a class="code" href="g_i_l_0214.html#g718772a47188f4e2ecfce2f28fa3dc4f" title="std::fill(I,I,V) with I being a iterator_from_2d">std::fill</a>(first.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>(), last.<a class="code" href="g_i_l_0042.html#72169bdc650ac7eda288398e4ce1d7f8">x</a>(), val);
    326. 

  326. <a name="l00377"></a>00377     } <span class="keywordflow">else</span> {
    327. 

  327. <a name="l00378"></a>00378         <span class="comment">// fill row by row</span>
    328. 

  328. <a name="l00379"></a>00379         std::ptrdiff_t n=last-first;
    329. 

  329. <a name="l00380"></a>00380         <span class="keywordflow">while</span> (n&gt;0) {
    330. 

  330. <a name="l00381"></a>00381             std::ptrdiff_t numToDo=std::min&lt;const std::ptrdiff_t&gt;(n,(std::ptrdiff_t)(first.width()-first.x_pos()));
    331. 

  331. <a name="l00382"></a>00382             fill_n(first.x(), numToDo, val);
    332. 

  332. <a name="l00383"></a>00383             first+=numToDo;
    333. 

  333. <a name="l00384"></a>00384             n-=numToDo;
    334. 

  334. <a name="l00385"></a>00385         }
    335. 

  335. <a name="l00386"></a>00386     }
    336. 

  336. <a name="l00387"></a>00387 } 
    337. 

  337. <a name="l00388"></a>00388 } <span class="comment">// namespace std</span>
    338. 

  338. <a name="l00389"></a>00389 
    339. 

  339. <a name="l00390"></a>00390 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
    340. 

  340. <a name="l00391"></a>00391 
    341. 

  341. <a name="l00392"></a>00392 <span class="keyword">namespace </span>detail {
    342. 

  342. <a name="l00394"></a><a class="code" href="g_i_l_0521.html">00394</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0521.html" title="struct to do std::fill">std_fill_t</a> {
    343. 

  343. <a name="l00395"></a>00395     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> P&gt;
    344. 

  344. <a name="l00396"></a>00396     <span class="keywordtype">void</span> operator()(It first, It last, <span class="keyword">const</span> P&amp; p_in) {
    345. 

  345. <a name="l00397"></a>00397         <a class="code" href="g_i_l_0214.html#g718772a47188f4e2ecfce2f28fa3dc4f" title="std::fill(I,I,V) with I being a iterator_from_2d">std::fill</a>(first,last,p_in);
    346. 

  346. <a name="l00398"></a>00398     }
    347. 

  347. <a name="l00399"></a>00399 };
    348. 

  348. <a name="l00401"></a>00401 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> P&gt;
    349. 

  349. <a name="l00402"></a>00402 GIL_FORCEINLINE 
    350. 

  350. <a name="l00403"></a>00403 <span class="keywordtype">void</span> fill_aux(It first, It last, <span class="keyword">const</span> P&amp; p, mpl::true_) {
    351. 

  351. <a name="l00404"></a>00404     static_for_each(first,last,p,<a class="code" href="g_i_l_0521.html" title="struct to do std::fill">std_fill_t</a>());
    352. 

  352. <a name="l00405"></a>00405 }
    353. 

  353. <a name="l00407"></a>00407 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> P&gt;
    354. 

  354. <a name="l00408"></a>00408 GIL_FORCEINLINE 
    355. 

  355. <a name="l00409"></a>00409 <span class="keywordtype">void</span> fill_aux(It first, It last, <span class="keyword">const</span> P&amp; p,mpl::false_) {
    356. 

  356. <a name="l00410"></a>00410     <a class="code" href="g_i_l_0214.html#g718772a47188f4e2ecfce2f28fa3dc4f" title="std::fill(I,I,V) with I being a iterator_from_2d">std::fill</a>(first,last,p);
    357. 

  357. <a name="l00411"></a>00411 }
    358. 

  358. <a name="l00412"></a>00412 } <span class="comment">// namespace detail</span>
    359. 

  359. <a name="l00413"></a>00413 
    360. 

  360. <a name="l00416"></a>00416 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> View, <span class="keyword">typename</span> Value&gt; GIL_FORCEINLINE 
    361. 

  361. <a name="l00417"></a><a class="code" href="g_i_l_0149.html#g3b28c66102763fd1d42f69e4eefa631f">00417</a> <span class="keywordtype">void</span> <a class="code" href="g_i_l_0149.html#gd38040bb50f5ea498151dd846d4d7873" title="fill_pixels for any image view. The pixel to fill with must be compatible with the...">fill_pixels</a>(<span class="keyword">const</span> View&amp; img_view, <span class="keyword">const</span> Value&amp; val) {
    362. 

  362. <a name="l00418"></a>00418     <span class="keywordflow">if</span> (img_view.is_1d_traversable())
    363. 

  363. <a name="l00419"></a>00419         detail::fill_aux(img_view.begin().x(), img_view.end().x(), 
    364. 

  364. <a name="l00420"></a>00420                  val,is_planar&lt;View&gt;());
    365. 

  365. <a name="l00421"></a>00421     <span class="keywordflow">else</span>
    366. 

  366. <a name="l00422"></a>00422         <span class="keywordflow">for</span> (std::ptrdiff_t y=0; y&lt;img_view.height(); ++y)
    367. 

  367. <a name="l00423"></a>00423             detail::fill_aux(img_view.row_begin(y),img_view.row_end(y),
    368. 

  368. <a name="l00424"></a>00424                      val,is_planar&lt;View&gt;());
    369. 

  369. <a name="l00425"></a>00425 }
    370. 

  370. <a name="l00426"></a>00426 
    371. 

  371. <a name="l00432"></a>00432 
    372. 

  372. <a name="l00436"></a>00436 
    373. 

  373. <a name="l00437"></a>00437 
    374. 

  374. <a name="l00438"></a>00438 <span class="keyword">namespace </span>detail {
    375. 

  375. <a name="l00439"></a>00439 
    376. 

  376. <a name="l00440"></a>00440 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; GIL_FORCEINLINE
    377. 

  377. <a name="l00441"></a>00441 <span class="keywordtype">void</span> destruct_range_impl(It first, It last, mpl::true_) {
    378. 

  378. <a name="l00442"></a>00442     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::value_type value_t;
    379. 

  379. <a name="l00443"></a>00443     <span class="keywordflow">if</span> (boost::has_trivial_destructor&lt;value_t&gt;::value)
    380. 

  380. <a name="l00444"></a>00444         <span class="keywordflow">return</span>;
    381. 

  381. <a name="l00445"></a>00445     <span class="keywordflow">while</span> (first!=last) {
    382. 

  382. <a name="l00446"></a>00446         first-&gt;~value_t();
    383. 

  383. <a name="l00447"></a>00447         ++first;
    384. 

  384. <a name="l00448"></a>00448     }
    385. 

  385. <a name="l00449"></a>00449 }
    386. 

  386. <a name="l00450"></a>00450 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; GIL_FORCEINLINE
    387. 

  387. <a name="l00451"></a>00451 <span class="keywordtype">void</span> destruct_range_impl(It first, It last, mpl::false_) {}
    388. 

  388. <a name="l00452"></a>00452 
    389. 

  389. <a name="l00453"></a>00453 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; GIL_FORCEINLINE
    390. 

  390. <a name="l00454"></a>00454 <span class="keywordtype">void</span> destruct_range(It first, It last) {
    391. 

  391. <a name="l00455"></a>00455     destruct_range_impl(first,last,<span class="keyword">typename</span> is_pointer&lt;It&gt;::type());
    392. 

  392. <a name="l00456"></a>00456 }
    393. 

  393. <a name="l00457"></a>00457 
    394. 

  394. <a name="l00458"></a>00458 <span class="keyword">struct </span>std_destruct_t {
    395. 

  395. <a name="l00459"></a>00459     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; <span class="keywordtype">void</span> operator()(It first, It last)<span class="keyword"> const </span>{ destruct_range(first,last); }
    396. 

  396. <a name="l00460"></a>00460 };
    397. 

  397. <a name="l00461"></a>00461 
    398. 

  398. <a name="l00463"></a>00463 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;
    399. 

  399. <a name="l00464"></a>00464 GIL_FORCEINLINE 
    400. 

  400. <a name="l00465"></a>00465 <span class="keywordtype">void</span> destruct_aux(It first, It last, mpl::true_) {
    401. 

  401. <a name="l00466"></a>00466     static_for_each(first,last,std_destruct_t());
    402. 

  402. <a name="l00467"></a>00467 }
    403. 

  403. <a name="l00469"></a>00469 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;
    404. 

  404. <a name="l00470"></a>00470 GIL_FORCEINLINE 
    405. 

  405. <a name="l00471"></a>00471 <span class="keywordtype">void</span> destruct_aux(It first, It last, mpl::false_) {
    406. 

  406. <a name="l00472"></a>00472     destruct_range(first,last);
    407. 

  407. <a name="l00473"></a>00473 }
    408. 

  408. <a name="l00474"></a>00474 
    409. 

  409. <a name="l00475"></a>00475 } <span class="comment">// namespace detail</span>
    410. 

  410. <a name="l00476"></a>00476 
    411. 

  411. <a name="l00479"></a>00479 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt; GIL_FORCEINLINE 
    412. 

  412. <a name="l00480"></a><a class="code" href="g_i_l_0147.html#g5c465a97a10e15d9ce18a3c2fff7f91d">00480</a> <span class="keywordtype">void</span> <a class="code" href="g_i_l_0147.html#g5c465a97a10e15d9ce18a3c2fff7f91d" title="Invokes the in-place destructor on every pixel of the view.">destruct_pixels</a>(<span class="keyword">const</span> View&amp; img_view) {
    413. 

  413. <a name="l00481"></a>00481     <span class="keywordflow">if</span> (img_view.is_1d_traversable()) 
    414. 

  414. <a name="l00482"></a>00482         detail::destruct_aux(img_view.begin().x(), img_view.end().x(), 
    415. 

  415. <a name="l00483"></a>00483                                        is_planar&lt;View&gt;());
    416. 

  416. <a name="l00484"></a>00484     <span class="keywordflow">else</span>
    417. 

  417. <a name="l00485"></a>00485         <span class="keywordflow">for</span> (std::ptrdiff_t y=0; y&lt;img_view.height(); ++y)
    418. 

  418. <a name="l00486"></a>00486             detail::destruct_aux(img_view.row_begin(y),img_view.row_end(y),
    419. 

  419. <a name="l00487"></a>00487                                            is_planar&lt;View&gt;());
    420. 

  420. <a name="l00488"></a>00488 }
    421. 

  421. <a name="l00489"></a>00489 
    422. 

  422. <a name="l00495"></a>00495 
    423. 

  423. <a name="l00499"></a>00499 
    424. 

  424. <a name="l00500"></a>00500 
    425. 

  425. <a name="l00501"></a>00501 <span class="keyword">namespace </span>detail {
    426. 

  426. <a name="l00502"></a>00502 
    427. 

  427. <a name="l00505"></a>00505 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> P&gt;
    428. 

  428. <a name="l00506"></a>00506 GIL_FORCEINLINE 
    429. 

  429. <a name="l00507"></a>00507 <span class="keywordtype">void</span> uninitialized_fill_aux(It first, It last,
    430. 

  430. <a name="l00508"></a>00508                             <span class="keyword">const</span> P&amp; p, mpl::true_) {
    431. 

  431. <a name="l00509"></a>00509     <span class="keywordtype">int</span> channel=0;
    432. 

  432. <a name="l00510"></a>00510     <span class="keywordflow">try</span> {
    433. 

  433. <a name="l00511"></a>00511         <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::value_type pixel_t;
    434. 

  434. <a name="l00512"></a>00512         <span class="keywordflow">while</span> (channel &lt; num_channels&lt;pixel_t&gt;::value) {
    435. 

  435. <a name="l00513"></a>00513             std::uninitialized_fill(dynamic_at_c(first,channel), dynamic_at_c(last,channel), 
    436. 

  436. <a name="l00514"></a>00514                                     dynamic_at_c(p,channel));
    437. 

  437. <a name="l00515"></a>00515             ++channel;
    438. 

  438. <a name="l00516"></a>00516         }
    439. 

  439. <a name="l00517"></a>00517     } <span class="keywordflow">catch</span> (...) {
    440. 

  440. <a name="l00518"></a>00518         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c=0; c&lt;channel; ++c)
    441. 

  441. <a name="l00519"></a>00519             destruct_range(dynamic_at_c(first,c), dynamic_at_c(last,c));
    442. 

  442. <a name="l00520"></a>00520         <span class="keywordflow">throw</span>;
    443. 

  443. <a name="l00521"></a>00521     }
    444. 

  444. <a name="l00522"></a>00522 }
    445. 

  445. <a name="l00523"></a>00523 
    446. 

  446. <a name="l00526"></a>00526 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> P&gt;
    447. 

  447. <a name="l00527"></a>00527 GIL_FORCEINLINE 
    448. 

  448. <a name="l00528"></a>00528 <span class="keywordtype">void</span> uninitialized_fill_aux(It first, It last,
    449. 

  449. <a name="l00529"></a>00529                             <span class="keyword">const</span> P&amp; p,mpl::false_) {
    450. 

  450. <a name="l00530"></a>00530     std::uninitialized_fill(first,last,p);
    451. 

  451. <a name="l00531"></a>00531 }
    452. 

  452. <a name="l00532"></a>00532 
    453. 

  453. <a name="l00533"></a>00533 } <span class="comment">// namespace detail</span>
    454. 

  454. <a name="l00534"></a>00534 
    455. 

  455. <a name="l00539"></a>00539 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> View, <span class="keyword">typename</span> Value&gt; 
    456. 

  456. <a name="l00540"></a><a class="code" href="g_i_l_0156.html#g4f5edbc3fe6b776c6aa1939902333cf3">00540</a> <span class="keywordtype">void</span> <a class="code" href="g_i_l_0156.html#g4f5edbc3fe6b776c6aa1939902333cf3" title="std::uninitialized_fill for image views. Does not support planar heterogeneous views...">uninitialized_fill_pixels</a>(<span class="keyword">const</span> View&amp; img_view, <span class="keyword">const</span> Value&amp; val) {
    457. 

  457. <a name="l00541"></a>00541     <span class="keywordflow">if</span> (img_view.is_1d_traversable()) 
    458. 

  458. <a name="l00542"></a>00542         detail::uninitialized_fill_aux(img_view.begin().x(), img_view.end().x(), 
    459. 

  459. <a name="l00543"></a>00543                                        val,is_planar&lt;View&gt;());
    460. 

  460. <a name="l00544"></a>00544     <span class="keywordflow">else</span> {
    461. 

  461. <a name="l00545"></a…
    462.